2213323221 has 4 divisors (see below), whose sum is σ = 2951097632. Its totient is φ = 1475548812.

The previous prime is 2213323199. The next prime is 2213323223. The reversal of 2213323221 is 1223233122.

It is a happy number.

2213323221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2213323221 - 2⁷ = 2213323093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213323223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368887201 + ... + 368887206.

It is an arithmetic number, because the mean of its divisors is an integer number (737774408).

Almost surely, 2^2213323221 is an apocalyptic number.

It is an amenable number.

2213323221 is a deficient number, since it is larger than the sum of its proper divisors (737774411).

2213323221 is an equidigital number, since it uses as much as digits as its factorization.

2213323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737774410.

The product of its digits is 864, while the sum is 21.

The square root of 2213323221 is about 47045.9692322307. The cubic root of 2213323221 is about 1303.2116294036.

Adding to 2213323221 its reverse (1223233122), we get a palindrome (3436556343).

Subtracting from 2213323221 its reverse (1223233122), we obtain a palindrome (990090099).

It can be divided in two parts, 22133 and 23221, that added together give a palindrome (45354).

The spelling of 2213323221 in words is "two billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred twenty-one".